Olmesartan Impurity 55 CAS 1227626-44-9
| CAS No. | 1227626-44-9 |
| Molecular Formula | C28H26N6O6 |
| Molecular Weight | 542.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Olmesartan Impurity 55 (CAS 1227626-44-9), a pharmacopoeial impurity reference standard (molecular formula C28H26N6O6, MW 542.54 g/mol) used for the identification and quantification of trace impurities in APIs.
Olmesartan Impurity 55 (C28H26N6O6) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Olmesartan Impurity 55 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C28H26N6O6 |
| Molecular Weight | 542.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 6 |
Related Olmesartan Standards
- Olmesartan Impurity 56 (CAS 2347585-74-2)
- Olmesartan Impurity 86 (CAS 883681-10-4)
- Olmesartan Medoxomil EP Impurity C (CAS 879562-26-2)
- Olmesartan impurity C (CAS CATO-C4X-10973)
- Olmesartan Impurity 13 (CAS 159532-62-4)
- Olmesartan Impurity 75 (CAS 1048948-20-4)
- Olmesartan (CAS 144689-63-4)
- Olmesartan Impurity 104 (CAS CATO-C4X-1097104)
Recommended Standards
- Azilsartan Impurity 57 (CAS 3031851-96-1)
- Azilsartan Impurity 55 (CAS 1883681-10-4)
- Azilsartan Impurity 52 (CAS 1449029-77-9)
- Pomalidomide Impurity 30 (CAS CATO-C4X-135430)
- Tramadol Impurity 18 (CAS 22204-88-2)
- Ilaprazole Impurity 1 (CAS 172152-37-3)
- Atomoxetine Impurity N15 (CAS 1643684-02-9)
- tert-Butyl 6-bromo-1-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylate (CAS 2767425-52-3)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com